<!doctype html>
<html>
<head>
  <title>Network | Clustering</title>

  <script type="text/javascript" src="../../../dist/vis.js"></script>
  <link href="../../../dist/vis-network.min.css" rel="stylesheet" type="text/css" />

  <style type="text/css">
    #mynetwork {
        width: 600px;
        height: 600px;
        border: 1px solid lightgray;
    }
    p {
        max-width:600px;
    }

    h4 {
        margin-bottom:3px;
    }
  </style>
  
</head>

<body>


<p>
Click any of the buttons below to cluster the network. On every push the network will be reinitialized first. You can click on a cluster to open it.
</p>

<input type="button" onclick="clusterByCid()" value="Cluster all nodes with CID = 1"> <br />
<input type="button" onclick="clusterByColor()" value="Cluster by color"> <br />
<input type="button" onclick="clusterByConnection()" value="Cluster 'node 1' by connections"> <br />
<input type="button" onclick="clusterOutliers()" value="Cluster outliers"> <br />
<input type="button" onclick="clusterByHubsize()" value="Cluster by hubsize"> <br />

<div id="mynetwork"></div>

<script type="text/javascript">
  // create an array with nodes
  var nodes = [
    {id: 1,  label: 'Node 1', color:'orange'},
    {id: 2,  label: 'Node 2', color:'DarkViolet', font:{color:'white'}},
    {id: 3,  label: 'Node 3', color:'orange'},
    {id: 4,  label: 'Node 4', color:'DarkViolet', font:{color:'white'}},
    {id: 5,  label: 'Node 5', color:'orange'},
    {id: 6,  label: 'cid = 1', cid:1, color:'orange'},
    {id: 7,  label: 'cid = 1', cid:1, color:'DarkViolet', font:{color:'white'}},
    {id: 8,  label: 'cid = 1', cid:1, color:'lime'},
    {id: 9,  label: 'cid = 1', cid:1, color:'orange'},
    {id: 10, label: 'cid = 1', cid:1, color:'lime'}
  ];

  // create an array with edges
  var edges = [
    {from: 1, to: 2},
    {from: 1, to: 3},
    {from: 10, to: 4},
    {from: 2, to: 5},
    {from: 6, to: 2},
    {from: 7, to: 5},
    {from: 8, to: 6},
    {from: 9, to: 7},
    {from: 10, to: 9}
  ];

  // create a network
  var container = document.getElementById('mynetwork');
  var data = {
    nodes: nodes,
    edges: edges
  };
  var options = {layout:{randomSeed:8}};
  var network = new vis.Network(container, data, options);
  network.on("selectNode", function(params) {
      if (params.nodes.length == 1) {
          if (network.isCluster(params.nodes[0]) == true) {
              network.openCluster(params.nodes[0]);
          }
      }
  });

  function clusterByCid() {
      network.setData(data);
      var clusterOptionsByData = {
          joinCondition:function(childOptions) {
              return childOptions.cid == 1;
          },
          clusterNodeProperties: {id:'cidCluster', borderWidth:3, shape:'database'}
      };
      network.cluster(clusterOptionsByData);
  }
  function clusterByColor() {
      network.setData(data);
      var colors = ['orange','lime','DarkViolet'];
      var clusterOptionsByData;
      for (var i = 0; i < colors.length; i++) {
          var color = colors[i];
          clusterOptionsByData = {
              joinCondition: function (childOptions) {
                  return childOptions.color.background == color; // the color is fully defined in the node.
              },
              processProperties: function (clusterOptions, childNodes, childEdges) {
                  var totalMass = 0;
                  for (var i = 0; i < childNodes.length; i++) {
                      totalMass += childNodes[i].mass;
                  }
                  clusterOptions.mass = totalMass;
                  return clusterOptions;
              },
              clusterNodeProperties: {id: 'cluster:' + color, borderWidth: 3, shape: 'database', color:color, label:'color:' + color}
          };
          network.cluster(clusterOptionsByData);
      }
  }
  function clusterByConnection() {
      network.setData(data);
      network.clusterByConnection(1)
  }
  function clusterOutliers() {
      network.setData(data);
      network.clusterOutliers();
  }
  function clusterByHubsize() {
      network.setData(data);
      var clusterOptionsByData = {
          processProperties: function(clusterOptions, childNodes) {
            clusterOptions.label = "[" + childNodes.length + "]";
            return clusterOptions;
          },
          clusterNodeProperties: {borderWidth:3, shape:'box', font:{size:30}}
      };
      network.clusterByHubsize(undefined, clusterOptionsByData);
  }

</script>

</body>
</html>
